Advances in Earth Science ›› 2018, Vol. 33 ›› Issue (7): 751-761. doi: 10.11867/j.issn.1001-8166.2018.07.0751

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An Analysis of Tectonic Geomorphologic Characteristics of the Beipanjiang Basin in the Yunnan-Guizhou Plateau

Yunlong Fan 1, 2( ), Baotian Pan 1, *( ), Zhenbo Hu 1, Dayin Ren 2, Qiwei Chen 2, Fenliang Liu 1, Zongmeng Li 1   

  1. 1.Key Laboratory of Western China’s Environmental Systems(Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China;
    2.Guizhou Provincial Key Laboratory of Geographic State Monitoring, School of Geography and Resource Science, Guizhou Education University, Guiyang 550018, China
  • Received:2017-12-05 Revised:2018-04-17 Online:2018-07-20 Published:2018-08-30
  • Contact: Baotian Pan E-mail:fanyunlongpeng@163.com;panbt@lzu.edu.cn
  • About author:

    First author:Fan Yunlong(1983-),male,Jingle County,Shanxi Province,Ph.D student. Research areas include geomorphology and environment. E-mail:fanyunlongpeng@163.com

  • Supported by:
    Project supported by the National Natural Science Foundation of China“The study on the development and evolution of Beipan River Gorge in the upper reaches of Hongshui River”(No41501006);The Guizhou Provincial Social Development Project “Study of the technology of carbon sequestration in karst ecosystem”(No[2012]3009).

Yunlong Fan, Baotian Pan, Zhenbo Hu, Dayin Ren, Qiwei Chen, Fenliang Liu, Zongmeng Li. An Analysis of Tectonic Geomorphologic Characteristics of the Beipanjiang Basin in the Yunnan-Guizhou Plateau[J]. Advances in Earth Science, 2018, 33(7): 751-761.

The Yunnan-Guizhou Plateau, located on the southeast boundary of the Tibet Plateau, is the second geomorphologic step in China continent. The large area tilting tectonic deformation occurred in this plateau with the uplift of the Tibet plateau since the Cenozoic. The Beipanjiang River rises in eastern Yunnan Province and southeastward across the slope zone from the Yunnan-Guizhou Plateau to the Guangxi Plain, and goes into the Hongshui River by the Wangmo in Guizhou Province. Due to the southeastward extrusion by the Tibetan Plateau, deep incised-valleys formed in the Yunnan-Guizhou Plateau, which have the characteristics of developed fault, complicated geological structure and rugged terrain. The Cenozoic evolution history of the Yunnan-Guizhou Plateau and the response to the uplifting of Tibet Plateau are unclear because of the lack of sedimentation records, and also this has long been a bottleneck to geomorphologic evolution research. Based on DEM data and GIS software, we extracted the geomorphic indexes which included hypsometric integral [HI], drainage basin asymmetry [AF], stream-length gradient index [SL], and valley floor width-to-height ratio [VF]. The results show that four geomorphic indexes can reflect the regional tectonic movement and topographical features. The geomorphology of Beipanjiang Basin is controlled by tectonic action mainly, especially the Yadu-Ziyun Fracture has great impact on the formation of valleys and the development of water system greatly.

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